A novel approach to determine the plasma frequency for wire media

Metamaterials Pub Date : 2012-11-01 DOI:10.1016/j.metmat.2012.08.001

Amitesh Kumar , Arijit Majumder , Sougata Chatterjee , Shantanu Das , Subal Kar

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引用次数: 2

Abstract

Analytical, simulation and experiment based technique has been reported in this paper to determine the plasma frequency of artificial media formed by arrays of parallel conducting wires called wire media. A generalized analytical approach based on quasi-static analysis has been done and compared with previously reported results to determine the plasma frequency of wire media. An eigenmode solver based simulation method has been used for plasma frequency extraction of infinite wire array using a commercial finite element method (FEM) based electromagnetic solver. The limitations of scattering-parameter based technique has been discussed and a new loss-factor method has been proposed. On the basis of simulated data, wire array has been fabricated and experiments has been carried out at X-band (8.2–12.4 GHz). Loss-factor method has been validated using the experimental data. Finally, the results of different techniques are compared to establish the efficacy of the loss-factor method supported by experimental results.

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一种测定线介质等离子体频率的新方法

本文报道了基于分析、模拟和实验的方法来确定由平行导线阵列构成的人造介质的等离子体频率。本文提出了一种基于准静态分析的广义分析方法，并与以往报道的结果进行了比较，以确定线介质的等离子体频率。采用基于商业有限元法的电磁求解器对无限线阵的等离子体频率提取进行了基于特征模解算的仿真。讨论了基于散射参数技术的局限性，提出了一种新的损耗因子法。在模拟数据的基础上，制作了线阵，并在x波段(8.2-12.4 GHz)进行了实验。利用实验数据对损失因子法进行了验证。最后，比较了不同技术的结果，以实验结果为支撑，验证了损失因子法的有效性。

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Metamaterials

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